[AMDGPU] Move WQM/WWM intrinsic instruction selection to AMDGPUISelDAGToDAG

llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp

void AMDGPUDAGToDAGISel::SelectINTRINSIC_W_CHAIN(SDNode *N) {
 
   SelectCode(N);
 }
 
 void AMDGPUDAGToDAGISel::SelectINTRINSIC_WO_CHAIN(SDNode *N) {
   unsigned IntrID = cast<ConstantSDNode>(N->getOperand(0))->getZExtValue();
   unsigned Opcode;
   switch (IntrID) {
+  case Intrinsic::amdgcn_wqm:
+    Opcode = AMDGPU::WQM;
+    break;
   case Intrinsic::amdgcn_softwqm:
     Opcode = AMDGPU::SOFT_WQM;
     break;
+  case Intrinsic::amdgcn_wwm:
+    Opcode = AMDGPU::WWM;
+    break;
   default:
     SelectCode(N);
     return;
   }
 
   SDValue Src = N->getOperand(1);
   CurDAG->SelectNodeTo(N, Opcode, N->getVTList(), {Src});
 }

llvm/lib/Target/AMDGPU/SIISelLowering.cpp

case Intrinsic::amdgcn_cvt_pk_u16: {
 
     if (isTypeLegal(VT))
       return DAG.getNode(Opcode, DL, VT, Op.getOperand(1), Op.getOperand(2));
 
     SDValue Node = DAG.getNode(Opcode, DL, MVT::i32,
                                Op.getOperand(1), Op.getOperand(2));
     return DAG.getNode(ISD::BITCAST, DL, VT, Node);
   }
-  case Intrinsic::amdgcn_wqm: {
-    SDValue Src = Op.getOperand(1);
-    return SDValue(DAG.getMachineNode(AMDGPU::WQM, DL, Src.getValueType(), Src),
-                   0);
-  }
-  case Intrinsic::amdgcn_wwm: {
-    SDValue Src = Op.getOperand(1);
-    return SDValue(DAG.getMachineNode(AMDGPU::WWM, DL, Src.getValueType(), Src),
-                   0);
-  }
   case Intrinsic::amdgcn_fmad_ftz:
     return DAG.getNode(AMDGPUISD::FMAD_FTZ, DL, VT, Op.getOperand(1),
                        Op.getOperand(2), Op.getOperand(3));
 
   case Intrinsic::amdgcn_if_break:
     return SDValue(DAG.getMachineNode(AMDGPU::SI_IF_BREAK, DL, VT,
                                       Op->getOperand(1), Op->getOperand(2)), 0);